Nut-tapping machine.



PATBNTED JUNE 12", 190s.

W. Ms MGKENZIE. NUT FYNG MACHINE.

APLIGATION FILED JULYX'T, 1R05.

2 SHEETS-SHEET l.

"PATENTBD JUNE 12, 1906.

W. M. MGKENZIE. NUT TAPPING MACHINE.

APPLIGATIGN FILED JULY 11"I 1905.

ping Machines, of which the following is a- -speoiicatiom referencebeing had therein to v vide en improved construction and arran e-WILLiAM M. MGKENZIE, OF VVILKINSBURG, PENNSYLVANIA.

NUT-TAPPING MACHINE.

` Speeoatin of Letters Patent.

Patented J une 1 2, l 906.

Appeals@ nu n1, rz, isos. Bumm. 270.502.

i To all whom. t may concern:

-Williinsburg in the vcounty of Allegheny,

State oi Pennsylvania, have invented certain new and useful Improvementsin Nut-Tape accompanying drawings.

This invention relates to a nut-tapping machine, and particularly to astructure adapted to eieot an automatic feed and delivery of the nutstherefrom.

The invention has for an ob 'ect to provide an improved construction anarrangement of the tap by which the same issu ported and heid bythe nutsfed thereon ater the tapping o eration and delivered from the oppositeen of the tap. i

A further object of the invention is to proment of a pusher adapted tocoperate with said tap in its reeiprooatory movement to permit the nutto be de osited in alinernentv with the ta p and there he d during thethreading operation. Y

A further object of the invention is to provide an improved arrangement.of shaker in the feed-trough by which the nuts received fro m the hoppershell be presented tothe tsp in proper position to secure themost'efieient,

results.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined bytheappended claims.

In the drawings, Figure 1 is a side eievation with parts in section;Fig. 2, an enlarged section of the tap and pusher mechanisms; Y

Fig. 3, en end view' of the machine with the -hopper and standardremoved; Fig. 4, a pian of the shaker mechanism; Fig. 5, a verticalsoutien through the holdin -pawlsg Fig. 6, a detail perspective of the elute for the nuthlanlis, and Fig. 7 a detail plan of the holding-pawiand tapping-chamber with the pusher removed.

Like letters of reference referto like 'parts in the several figures ofthe drawings. The letter A designates the frame of the nmehine, whichmay bo of anr desired construction or eoniiguration suitable for thepurpose, ind is provided with a vertical "'hel'dhy the pusher.

standard A", adapted to support at its upper 'ende feed-hopper A, withinwhich the nut hlanksr'fto beta pod or threaded are con tained, Upon iisbase A a head A is mounted and provided with a slidewsy within which epusher B is disposed. This pusher is provided with s recess or openingextendin therethrough, as shown at B', to permit t e discharge of chipsfrom the threading operetiOn, and is governed in its movement by the camB', mounted upon e shhft B in the head A, this cam being ade ted, toVengage with the lever B, pivotallly mounted 1n the head st -B andprovided at its iower lportion with a. hardened frietionroller Bj,adapted to be supported in position bV the threaded shank B1 thereof.

Thisy ro ler is-normally held in Contact with -throu h which the nutsdescend, and to sup# port t e blanks therein while holding oneof theblenksA in position for the threading operation.` When the ,usher isretracted, another blank is allows to fall in osition, whereit is heldin the tapping-chamer D by means of the oppositel disposed pawls D, eachof which is provided with a point D2, .against which the blank beingthreaded is The subsequent movement of this pusher forces these pawlsinward and allows the nut t0 travel upon the shank of the tap E aftertronvelinr ,over the threaded end E thereof. The pani-ls are held inposition in any desired manner-for in,- stance, byvmeans of a spring D,bearing upon the heed Ds of the pawi and held in position b aelosingeerew D, as shown in Fig. 5. The tappingrhamber is also providedat its end fece with a slot or wa D1 to permit the discharge ofnniterial o chips collecting therein. The body of the pawl is preferablyangular in oonfi uration and fits s siniiar rocess inthe wal s of thischamber, so as to T is usher at its forward end is odapt- Y xo tion Cfor the same.j urpose.

keep the point D thereof proper position to engage the blank.

The chute or trough C is preferablylforlned open at the front, as shownlC', w ich permits aready ins ection of the blanks travelmechanism F-forthe purpose of introducing r 5 the blanks'into the tro'ugh. This shakeris rovided with an enlar ed open portion at its upper ond, into whic-the nuts are introduced bythe feeder G from the` hopper, and is alsoprovided with a wall F thereof, i ivzo oted at itslower end and rovidedwit i an z 5 vibrati 3o with a depen 3 5 their sides parallel to the walarm F, carrying a'sprin connected 'to a fixed A'bracket F', 'as -shoeausesfthe -Inovablefrall to n `toward the fixedwall. v For the-` urposeof this movablewall a` aft F is niounte upon the upper face ofthechamber Y *and provided at its outer end with a driving- J pulley F,having upTon the hub thereof a se` ries of strikerpins adaapted -tocotperate A ng finger 1, carried y the arm F, extending from the movablewall of the shaker. The result of this motion isto.

constantly vibratethe Wall F2, thus causinU the blanks to be fed in asin le 'series with lzand insures a feed thereof 1n proper positionthrough the trough C.

The blanks may be fed directly into this shaker; but preferably thehopper is connect- ,4o ed therewith by means of the rotatable feeding-clinder G, provided interiorly with a.V

spira path or way, preferably `formed ofeoiled wire, and .at its upperend is provided with a roller-bearing G within the lower end G of thehopper, this bearing being secured in position by means of the threadedbearing G, as shown by section in Fig. 1. The feeding-cylinder isrotated by means of a gear G, mounted thereon and meshin with a cop- 5oeratin gear G, having its Sha t journaled 1n a brac 'et A5,extendingoutward'from the standard.

The partshereinbefore described may be driven in any desired manner-forinstance,

5 5 by means of the driving-shaft 1I, provided at one cnd with a pulleyIl', belted at 1l3 to a stepped cone H3, mounted upon a1 deliveryshaftI, which carries at its inner end the tap E. This driving-shaft ll isalso provided 6o with a friction-wheel K, cooperating with a similarwheel K', mounted upon a cross-shaft T l at thc base of the machine,which shaft is provided with a dri ving-pulley Il, from which a belt llextends to a suitable` dri vingane ulley H upon the shaftof the cam B2,be-

ore described. The opposite end of the shaft of this cani is also)rovided with a driving-pulley H, from which a belt Il extendsto apulley F upon the shaft of the shaker. This cani-shaft has at its oposite Yend a second driving-pulley J, from w iich a belt J extendsupward to the driving-pulley J", disposed upon the shaft of the gear G"for rotating the feeder.

The tap E is provided intermediate of its opposite ends with portionsE2, deflected at opposite sides of a line extending between said ends,and this deflected portion of the tap, in -connection with the completedn ut traveling thereon, serves to hold the ta against an longitudinalthrust in either d1- rection an also against slip ing within the holderI' thereof,.as Athe deiljeeted or crank portion, with the nuts disposedthereon, (shownin Fig. 2,) serves to counteract. any rotative motion ofthe shaft relative to this with the nuts thereon in proper-position forholding it in action. The nuts in their lon itudinal travel over the ta-shank are fina ly dischar ed at the end 3 thereof and are forced ycontact with each other. through the delivery-shaft I, mounted insuitable bearings I5 and discharged from the open end 1, where they canbe received in any suitable receptacle. A

In the operation of this invention when it is desired to start themachine several nuts are disposed upon the shank within its holder, soas to retain the shank in position and the driving mechanism thenstarted. The nuts are thus fed from the hopper or Imagazine through thetubular feeder and dischar ed into the shaker at the upper end of Vthe cnite. This shaker insures the passage of the nuts into the chute upontheir flat sides, so a's to fall on edge between the ta and the pusher,lthey beingheldin this position by the oppositely-disposcd pawls in thetapping-chamber. he pusher in its movement then brings the nut-blankinto contact with the tap and continues'its pressure until the tap haspassed through the nut and thc latter passes from the theadedportion ofthe tap onto its shank. At this time thv pusher lies beneath thc nutsand the chnlr, thus .snpporting them in position, and the rhips` fromthe tapping operation 'mss through ilw aperture in tllcpushcr. T wtapping-rhumbcr as well as the holder For the mp :nr provided withangular woll, so :is 1o prevent ICO IOS l shank and Corresponding to theconfigura- In testimony wheroof I affix my signature tion of the shankto retain the shank against in' presence of two witnesses.

relative rotary or longitudinal motion by ,T Tr 1 means of the completedarticle passing over vl ILLIAM M' MCKEILIL the said shank, :md a, hollowdelivery-shaft Vitnesses:

connected to said holder und havin the free THOMAS A. DICKS,

discharge end of said shank dispose( therein. H. S. MCCLMONDs.

